Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/11987
Title: Toward optimized charge transport in multilayer reduced graphene oxides
Authors: Çınar, Mustafa Neşet
Antidormi, Aleandro
Nguyen, Viet-Hung
Kovtun, Alessandro
Lara-Avila, Samuel
Liscio, Andrea
Charlier, Jean-Christophe
Roche, Stephan
Sevinçli, Haldun
Izmir Institute of Technology
CSIC Barcelona Institute of Science and Technology
Université Catholique de Louvain
Istituto per la Sintesi Organica e la Fotoreattivita
Chaimers University of Technology
Istituto per la Microelettronica e Microsistemi
Université Catholique de Louvain
CSIC Barcelona Institute of Science and Technology
Izmir Institute of Technology
Keywords: Disordered van der Waals thin films
Reduced graphene oxides
Charge transport
Quantum transport
Interlayer transport
Multilayer transport scaling law
Issue Date: 1-Mar-2022
Publisher: American Chemical Society
Abstract: In the context of graphene-based composite applications, a complete understanding of charge conduction in multilayer reduced graphene oxides (rGO) is highly desirable. However, these rGO compounds are characterized by multiple and different sources of disorder depending on the chemical method used for their synthesis. Most importantly, the precise role of interlayer interaction in promoting or jeopardizing electronic flow remains unclear. Here, thanks to the development of a multiscale computational approach combining first-principles calculations with large-scale transport simulations, the transport scaling laws in multilayer rGO are unraveled, explaining why diffusion worsens with increasing film thickness. In contrast, contacted films are found to exhibit an opposite trend when the mean free path becomes shorter than the channel length, since conduction becomes predominantly driven by interlayer hopping. These predictions are favorably compared with experimental data and open a road toward the optimization of graphene-based composites with improved electrical conduction.
URI: https://hdl.handle.net/11147/11987
https://doi.org/10.1021/acs.nanolett.1c03883
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği

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